Home / 5,278.25-7,917.82-1,382.63

Finding the Fourth Proportional to 5,278.25, 7,917.82 and 1,382.63

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Solution

The fourth proportional to 5,278.25, 7,917.82 and 1,382.63 is: 2,074.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.25 : 7,917.82 = 1,382.63 : x
  2. Step 2: Convert to fraction form
    5,278.25/7,917.82 = 1,382.63/x
  3. Step 3: Cross multiply
    5,278.25x = 7,917.82 × 1,382.63
  4. Step 4: Simplify right side
    5,278.25x = 10,947,372.42
  5. Step 5: Solve for x
    x = 10,947,372.42/5,278.25
  6. Step 6: Final answer
    x = 2,074.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.